tolong dijawab no. 22!!please pake cara

(2x - 3)(4x² + 6x + 9)
= 2x(4x² + 6x + 9) - 3(4x² + 6x + 9)
= 8x³ + 12x² + 18x - 12x² - 18x - 27
= 8x³ + 12x² - 12x² + 18x - 18x - 27
= 8x³ - 27